Abstract: Provided is a benzotriazole compound represented by Formula (1). In Formula (1), R1 to R4 represent substituents. In Formula (1), n1 represents an integer from 0 to 4, and n2 represents an integer from 0 to 3.

Abstract: A pyrromethene-boron complex compound represented by the following formula (1); wherein Z1 and Z2 are independently a hydrogen atom, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group or a substituted or unsubstituted aryloxy group, at least one of Z1 and Z2 is an alkoxy group substituted with a fluorine atom or an aryloxy group substituted with a fluorine atom or a fluoroalkyl group, and Z1 and Z2 may form a ring.

Abstract: A pyrromethene-boron complex compound represented by the following formula (1); wherein Z1 and Z2 are independently a hydrogen atom, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group or a substituted or unsubstituted aryloxy group, at least one of Z1 and Z2 is an alkoxy group substituted with a fluorine atom or an aryloxy group substituted with a fluorine atom or a fluoroalkyl group, and Z1 and Z2 may form a ring.

Abstract: The arylsulfonylureide compound which is of value as a color developer is provided in high yield and high purity by a simple procedure. The technology of the invention for producing an arylsulfonylureide compound of general formula (1)(Ar.sup.1 --SO.sub.2 NHCONH).sub.n --Ar.sup.2 (1)wherein Ar.sup.1 represents an aromatic residue; Ar.sup.2 represents a bivalent or trivalent aromatic residue; n represents an integer of 2 or 3 comprises reacting an arylsulfonamide alkali metal salt of general formula (2)Ar.sup.1 --SO.sub.2 NH.B (2)wherein B represents an alkali metal with an aromatic isocyanate compound of general formula (3)Ar.sup.2 --(NCO).sub.

Abstract: A process for preparing a 3-(N,N-disubstituted amino)phenol is herein disclosed which comprises reacting resorcin with a primary amine represented by formula (2):R.sup.1 NH.sub.2 (2)wherein R.sup.1 is an alkyl group, a cycloalkyl group, an alkenyl group, an alkoxyalkyl group, an aryl group or an aralkyl group,terminating the reaction when the conversion of resorcin is 50 mol % or more and when the amount of an N,N'-disubstituted-m-phenylenediamine as a by-product is 2 mol % or less of the amount of used resorcin, adding an alkyl halide represented by formula (3):R.sup.2 X (3)wherein R.sup.2 is an alkyl group or a cycloalkyl group; and X is a halogen atom,to the obtained reaction mixture, adding an aqueous alkaline solution to the resultant reaction mixture to dissolve unreacted resorcin in the aqueous phase, extracting the 3-(N,N-disubstituted amino)phenol with an organic solvent, and then recovering unreacted resorcin from the aqueous phase.

Abstract: A heat-sensitive recording material which has a support and a heat-sensitive recording layer containing at least one carboxylate represented by the following formula (1) or (2) ##STR1## wherein a ring X is an aromatic residue which may have a substitute; the other substituents are as defined herein. The heat-sensitive recording material exhibits excellent color image stability and can provide an optically character-readable sharp image.

Abstract: A phthalide compound of general formula (I) and a near infrared absorber and a recording material each utilizing the phthalide compound are disclosed. ##STR1## wherein ring A represents a substituent group of the following formula ##STR2## where the other substituents are as defined in the disclosure. The near infrared absorber and the recorded image on the recording material absorb strongly the near infrared region with no appreciable absorption in the visible region of the spectrum. The near infrared absorber is colorless or pale in color and yet highly capable of absorbing near infrared radiation. The recorded image on the recording material can hardly be read with the eye but can be read with the OCR. Moreover, the effect on the developed shade of any concomitant color former in a recording material is minimal.

Abstract: A carboxylate is herein disclosed which is represented by the formula (1) or (2) ##STR1## wherein a ring X is an aromatic residue which may have a substituent; the other substitutents are as defined herein. A heat-sensitive recording material comprising this carboxylate is excellent in the stability of the color image and can provide an optically character-readable sharp color image.